wehub-resource-sync
dde272c4b8
i18n - Build Validation / Validate i18n Builds (24) (push) Has been cancelled
CI - Node.js / Lint (24) (push) Has been cancelled
CI - Node.js / Build (24) (push) Has been cancelled
CI - Node.js / Test (24) (push) Has been cancelled
CI - Node.js / Test - Upcoming Changes (24) (push) Has been cancelled
CI - Node.js / Test - i18n (italian, 24) (push) Has been cancelled
CI - Node.js / Test - i18n (portuguese, 24) (push) Has been cancelled
CD - Docker - GHCR Images / Build and Push Images (push) Has been cancelled
77 lines
1.9 KiB
Markdown
77 lines
1.9 KiB
Markdown
---
|
|
id: 69bc6cb30c1d112a2e110a05
|
|
title: "Challenge 248: Sorted Array Swap"
|
|
challengeType: 28
|
|
dashedName: challenge-248
|
|
---
|
|
|
|
# --description--
|
|
|
|
Given an array of integers, return a new array using the following rules:
|
|
|
|
1. Sort the integers in ascending order
|
|
2. Then swap all values whose index is a multiple of 3 with the value before it.
|
|
|
|
# --hints--
|
|
|
|
`sortAndSwap([3, 1, 2, 4, 6, 5])` should return `[1, 2, 4, 3, 5, 6]`.
|
|
|
|
```js
|
|
assert.deepEqual(sortAndSwap([3, 1, 2, 4, 6, 5]), [1, 2, 4, 3, 5, 6]);
|
|
```
|
|
|
|
`sortAndSwap([9, 7, 5, 3, 1, 2, 4, 6, 8])` should return `[1, 2, 4, 3, 5, 7, 6, 8, 9]`.
|
|
|
|
```js
|
|
assert.deepEqual(sortAndSwap([9, 7, 5, 3, 1, 2, 4, 6, 8]), [1, 2, 4, 3, 5, 7, 6, 8, 9]);
|
|
```
|
|
|
|
`sortAndSwap([1, 2, 3, 4, 5, 6, 7, 8, 9])` should return `[1, 2, 4, 3, 5, 7, 6, 8, 9]`.
|
|
|
|
```js
|
|
assert.deepEqual(sortAndSwap([1, 2, 3, 4, 5, 6, 7, 8, 9]), [1, 2, 4, 3, 5, 7, 6, 8, 9]);
|
|
```
|
|
|
|
`sortAndSwap([12, 5, 8, 1, 3, 10, 2, 7, 6, 4, 9, 11])` should return `[1, 2, 4, 3, 5, 7, 6, 8, 10, 9, 11, 12]`.
|
|
|
|
```js
|
|
assert.deepEqual(sortAndSwap([12, 5, 8, 1, 3, 10, 2, 7, 6, 4, 9, 11]), [1, 2, 4, 3, 5, 7, 6, 8, 10, 9, 11, 12]);
|
|
```
|
|
|
|
`sortAndSwap([100, -50, 0, 75, -25, 50, -75, 25])` should return `[-75, -50, 0, -25, 25, 75, 50, 100]`.
|
|
|
|
```js
|
|
assert.deepEqual(sortAndSwap([100, -50, 0, 75, -25, 50, -75, 25]), [-75, -50, 0, -25, 25, 75, 50, 100]);
|
|
```
|
|
|
|
`sortAndSwap([5, 9, 13, 77, 88, 313, -10, -65, 0, 8, 99, 101, -4, 2])` should return `[-65, -10, 0, -4, 2, 8, 5, 9, 77, 13, 88, 101, 99, 313]`.
|
|
|
|
```js
|
|
assert.deepEqual(sortAndSwap([5, 9, 13, 77, 88, 313, -10, -65, 0, 8, 99, 101, -4, 2]), [-65, -10, 0, -4, 2, 8, 5, 9, 77, 13, 88, 101, 99, 313]);
|
|
```
|
|
|
|
# --seed--
|
|
|
|
## --seed-contents--
|
|
|
|
```js
|
|
function sortAndSwap(arr) {
|
|
|
|
return arr;
|
|
}
|
|
```
|
|
|
|
# --solutions--
|
|
|
|
```js
|
|
function sortAndSwap(arr) {
|
|
const result = [...arr].sort((a, b) => a - b);
|
|
|
|
for (let i = 3; i < result.length; i += 3) {
|
|
[result[i], result[i - 1]] = [result[i - 1], result[i]];
|
|
}
|
|
|
|
return result;
|
|
}
|
|
```
|